i want to develop an assembler but i dont know how to decode int 13h or any int xxh instruction in object code.
please help,
it's an immergency.............
Posted on 2010-10-31 01:20:01 by ajinkya
You have two possible options for encoding asm opcodes into binary form.

The first is to read intel's manual, where the description of all encoding forms can be found.
And the second is to put them in a program, assemble it, and then look at it in a debugger or disassembler !!
Posted on 2010-10-31 06:21:20 by Homer
ajinkya,

Be precise, are you writing an assembler or in assembly language? Former implies that you do know encoding for much more complex instructions than int; latter may require RBIL as a source of information about various services available through int instruction.
Posted on 2010-10-31 06:45:19 by baldr